1. Introduction
This manual provides essential information for the safe assembly, operation, maintenance, and troubleshooting of your QRONGE Lava Electric Tricycle. Please read this manual thoroughly before using the product and retain it for future reference. The QRONGE Lava Electric Tricycle is designed for adult use, featuring a 750W brushless motor (960W peak), a 36V 15AH removable battery, 20"x4" fat tires, and a 7-speed Shimano derailleur system. It offers five riding modes and is equipped with front suspension and disc brakes for a comfortable and secure riding experience.
2. Safety Guidelines
Always wear a helmet and appropriate safety gear when riding. Ensure all components are securely fastened before each ride. Do not exceed the maximum weight recommendation of 500 pounds. Avoid riding in adverse weather conditions or on unsafe terrain. Familiarize yourself with local traffic laws and regulations for electric bicycles and tricycles. Regularly inspect brakes, tires, and battery for optimal performance and safety.
3. Setup and Assembly
Your QRONGE Lava Electric Tricycle arrives approximately 90% pre-assembled. The following steps detail the completion of the assembly process. Refer to the provided video for visual guidance.
3.1. Handlebar Installation
Insert the handlebar stem into the fork tube. Ensure it is aligned correctly and tighten the bolts securely. Adjust the handlebar angle for comfortable riding posture.
3.2. LED Screen Installation
Attach the LED display screen to the handlebar using the provided screws. Connect the display cable to the corresponding port on the tricycle's wiring harness.
3.3. Front Wheel Installation
Carefully align the front wheel with the fork. Ensure the disc brake rotor slides correctly into the caliper. Insert the quick-release skewer or axle and tighten it firmly. Connect the motor cable if applicable.
Image: The QRONGE Lava Electric Tricycle, showcasing the front wheel and basket. The front wheel is a 20-inch fat tire with a disc brake, and a front basket is mounted on the handlebars.
3.4. Front Fender Installation
Mount the front fender above the front wheel. Secure it using the provided bolts and brackets, ensuring it does not interfere with wheel rotation or braking.
3.5. Pedal Installation
Identify the left (L) and right (R) pedals. Thread the pedals into their respective crank arms. The right pedal tightens clockwise, and the left pedal tightens counter-clockwise. Use a wrench to secure them firmly.
3.6. Rear Basket Installation
Assemble the rear basket components, including the fenders. Attach the assembled basket to the rear frame of the tricycle using the provided hardware. Ensure all bolts are tightened for stability.
Image: A QRONGE Lava Electric Tricycle with a large rear basket, demonstrating its cargo capacity. The basket is shown with items inside, highlighting its utility.
3.7. Front Basket Installation
Attach the front basket to the handlebars using the designated mounting points. Ensure it is securely fastened and does not obstruct steering or controls.
3.8. Seat Installation
Insert the seat post into the frame's seat tube. Adjust the seat height to a comfortable position where your feet can touch the ground. Tighten the quick-release lever or bolt to secure the seat. The seat includes a backrest for added comfort.
3.9. Tire Inflation
Inflate all three 20"x4" fat tires to the recommended pressure indicated on the tire sidewall. Use a bicycle pump with a pressure gauge.
3.10. Handlebar Adjustment
Adjust the angle of the handlebars for optimal comfort and control. Ensure they are centered and securely tightened after adjustment.
Video: A detailed installation guide for the QRONGE Lava Electric Tricycle, demonstrating each step of the assembly process from unboxing to final adjustments. This video is provided by the seller, QRONGE-US.
4. Operating Instructions
4.1. Powering On/Off
To power on the tricycle, press and hold the power button on the LED display. To power off, press and hold the same button. The display will show battery level, speed, and assist mode.
4.2. Riding Modes and Pedal Assist
The QRONGE Lava Electric Tricycle features 5 riding modes. Use the '+' and '-' buttons on the display to adjust the pedal assist level. Level 1 provides minimal assistance, while higher levels offer more motor power. The tricycle also has a throttle for electric-only propulsion.
4.3. Braking
The tricycle is equipped with disc brakes for reliable stopping power. Squeeze both brake levers simultaneously for balanced braking. Practice braking in a safe area before riding in traffic.
4.4. Cargo Usage
Utilize the large rear basket and front basket for carrying items. Ensure cargo is evenly distributed and securely fastened to maintain stability, especially when turning. The rear basket has a capacity of up to 500 pounds (combined with rider weight).
Video: A demonstration of the QRONGE Lava Electric Tricycle in use, highlighting its stability, cargo capacity with front and rear baskets, and ease of riding for daily errands. This video is provided by the seller, QRONGE-US.
5. Maintenance
5.1. Battery Charging
The 36V 15AH battery is removable for convenient charging. Connect the charger to the battery port and then to a standard power outlet. The charger indicator light will show charging status (typically red for charging, green for full). A full charge takes approximately 7-8 hours. Do not overcharge the battery.
Image: A close-up view of the 36V 15AH removable battery integrated into the frame of the QRONGE Lava Electric Tricycle, highlighting its design and accessibility.
5.2. Tire Pressure
Regularly check and maintain the recommended tire pressure for the 20"x4" fat tires. Proper inflation ensures optimal ride comfort, efficiency, and tire longevity.
5.3. General Cleaning
Clean the tricycle regularly with a damp cloth. Avoid using high-pressure water jets directly on electrical components. For long-term storage, use the provided dust cover to protect the tricycle from dust and elements.
Image: A QRONGE Lava Electric Tricycle covered with a black dust cover, illustrating how to protect the vehicle during storage.
5.4. Brake and Chain Inspection
Periodically inspect the disc brakes for wear and proper function. Check the chain for tension and lubrication. Lubricate the chain as needed to ensure smooth operation.
6. Troubleshooting
If you encounter any issues with your QRONGE Lava Electric Tricycle, refer to the following common problems and solutions:
- No Power: Ensure the battery is fully charged and properly seated in the frame. Check that the power button on the display is pressed and held to turn on the system.
- Motor Not Engaging: Verify that the pedal assist level is set above 0. Check for any error codes on the LED display. Ensure all motor cables are securely connected.
- Brake Malfunction: If the brakes feel spongy or are not stopping effectively, inspect the brake pads for wear and the cables for proper tension. Consult a professional for brake adjustments if necessary.
- Unusual Noises: Investigate the source of any unusual noises. This could indicate loose components, a dry chain, or issues with the motor or wheels.
For issues not covered here or if problems persist, please contact QRONGE customer service.
7. Specifications
| Feature | Specification |
|---|---|
| Bike Type | Electric Tricycle |
| Model Name | Lava |
| Motor | 750W Brushless (960W Peak) |
| Battery | 36V 15AH Removable Lithium |
| Max Speed | 20 MPH |
| Range | Up to 50 Miles (single charge) |
| Wheel Size | 20" x 4" Fat Tires |
| Number of Speeds | 7 (Shimano Derailleur) |
| Riding Modes | 5 (Pedal Assist) |
| Frame Material | Aluminum |
| Suspension Type | Front |
| Brake Style | Disc |
| Maximum Weight Recommendation | 500 Pounds |
| Assembly Required | Yes (90% pre-assembled) |
8. Warranty
The QRONGE Lava Electric Tricycle comes with a Limited Warranty. Please refer to the warranty card included with your product for specific terms and conditions. Keep your proof of purchase for any warranty claims.
9. Customer Support
For professional customer service and support, the QRONGE team is available to assist you. If you have any questions regarding assembly, operation, maintenance, or warranty, please feel free to contact us by phone or e-mail. Contact information can be found in your product packaging or on the official QRONGE website.
Visit the QRONGE Store for more information and products.
